When you're experimenting you have to try so many things before you choose what you want, and you may go days getting nothing but exhaustion.
Source: In Words of Wisdom, by Wm. Safire & Leonard Safire, 1989.
-- Fred Astaire, (May 10 1899-1987), US dancer, actor; He was the leading dance star of his generation in Top Hat, 1935 and Daddy Long Legs, 1955.